Windscreen



F. A. TAYLOR April 25, 1933.

WINDSCREEN Filed Jan. 9, 1950 Z7VVENTORI JMM M... 4,4

so as to be held from relative angular displacement.

The relative disposition of the parallel spaced planes 2, 3, and the lower panel 1 s such that the angle p (Fig. 2) between the rear face of the panel 1 and the rear plane 3 is less than 180. While the panel 1 has been shown in Figs. 1 and 3 as lying in a substantially vertical plane it is to be understood thai; t may be inclined to the vertcal as represented by the dotted line positions 31, 41, 51, in Fig. 2. Further, the arrangement of the upperedge of the lower panel 1, 31, 41, 51, :is such -that its -plane would pass between the spaced planes 2, 3, but in its normal positon the upper edge of the panel 1 lies below the l0wer edges di the planes 2, 3 to forno a clear vision gap 5.

In order to prevent the entry of lateral air currents into the scneenthe seme provided with side platee 6 and 7 whch et their upper -enc lsare extended toform latral-Closure member s of the space between the planes 2, -3. In this' mmmer the space between the said planes 2, 3 forms e channel -which 's -open enly at the opposi'te ends in the const-ructon illustrateil at the top anl bottom.

In -order to cbta'n the e'flcacious operation of the screen as 'hereinafter described, t i s prefevrecl that the upper front plaxe2fproed'ge of the plane 3 by a distance e Wheh 1's at least equal to half the perpendcular distancea betweenthe plans 2, B. Thsresu'lts in the ,creation of a-=partal vacuum behnd plane 2 upon *movement -of the vlicle in a f0rwa-rdwlirection Which Hids ncreaiiihg-fl0w of air upwardly throughthe.channl'-formed between plunes2 and 3 and the lateralplanes 6 end 7. 'The iact-t hat plane 2 projects-above plane 3' sdbstaritiailly prevents the passage ofrain downwardlyiitothis*dhannel. V

The iepth-o'f the ga-p 5 may be vared, fdr exzmxple as'shewn in Fgfi3 e'ither'by 'formng the re'ar upper Plan 3 soas to be slidzible in its -own plane n'to the-'postion Shown at 23 se as to EII1BB) the uppereclgeof the-panel 1. 'The lower panel 1 may also be vertcafilly adjustab'le from its norm&l position shown in full in Fig. 3 to the dotted poslitions shown edmistue-lateraly to thescreen. In order,

further, to limit the size of the globules which collect on the bottom edge of the front plane 2, the said edge is preferably formel so as to taper outwardly as shown at 10 so as to form an acute angled edge. As shown ;n Fig. 4 the gutter 9 and edge 10 may, be formed integrally from one metal member which is secured toor forms parts of a channel member 12 arranged around the lower edge of the plane 2. y

From the above t s obvious that the screen in the preferred construction comprises a box like structure hav-ng a lower panel -1, an inclined upper panel 2, a parallel rear inclined. panel 3 which les withn the box structurea-nd latera-lly disposed members 6 and 7 which prevent the entry of lateral ar currents into the box structure. The frame 4 of the box structure may be formed in any desimecl manner, for examp'le o-E wood or metal or of both substances.

saicl upper -panel unit replaing the normal up,per portion of the screen.

The operation of the screen 'is such as to provide, CluriIl g relative movement Of the vehile ancl an air current, an 11pward"flow o'f air through the space between the planes 2,3

the uppe1 edge of the lower panel Whch' causes arto be crculated from the 1'tror of the vehicle outwardly through the space between the planes 2 ancl3.

When the vehle i s tatonary therei s a tenilen'cy "for rain to flow down the u pper etlge thereoji into the inte1ior of 'the ve'hile. In 0rcler-te preventanynconVenence caused there'by a shelilmember 'is prefeneibly proly beyoncl theeclge of the plane3, the slnell 13 being preferably arched and forming a gap :suchas l4-to:allow thewater-tosbefled .a-way;

tecton may be obtained f necessary by slight rasing of the line of sight.

In additon to 01 instead of the sheld member 13, the lower edge of the rear inclined plane 3 may be provided with a gutter for leading away accumulated water whch may be constructed in the same manner as the guizter 9, 10 or otherwse, suitable conduits beng provded at opposite sdes of the plane 3 to convey the water to the exterior of the screen and/or vehcle.

In such a case -those parts of the lateral platee; 6, 7 lying outside the channel formed by the planes 2, 3 may be dispensed wt-h or modified and may, in fact, be replaced by existing parts of the vehcle structure such as the doorsor the lke.

What I clam is 1. A windscreen of the clear vision gap type comprising a lower panel unit consistng of a panel havng its upper edge formng the lower boundary of a clear vson gap and an upper panel unit comprising a pair of spaced parallel planes disposed at an angle of less than 180 relatvely to the real face of said lower panel and With their lower edges spaced above sad boundary edge to form an upper boundary edge, the plane of sztid lower panel lyng between sad spaced planes, supports holding said planes from relative angu- 1a1 dsplacement, and lateral panels forming together with said planes a straight channel of uniform cross-section open only at its upper and lower ends so as to provide 2m unrestrcted passageway for the flow of air, the lower edge of the front plane of sad spaced parallel planes being reduced in thickness relatively to the thckness of said plane so as to prevent che accumulation of large drops of water at the last-mentioned edge.

2. A windscreen of the clear vision gap type complising a lower panel unit consistng of a panel having its upper edge forming the Iower boundary of a clear vison gap and an upper panel unit comprsing a pair of spaced parallel planes disposed at an angle of less than 180 relatvely to the rear faee of said lower panel and with their lower edges spaced above sad boundary edge to form an upper boundary edge, the plane of sad lower panel lying between sad spaced planes, supborts holding said planes from relative angular displacement, lateral panels forming together with sad planes a straight channel of unform cross-secton, open only at its upper and lower ends so as to provide an unrestrcted passageway for the flow of air, an outwardly tapering member arranged on the 1ower edge of the front plane of said spaced parallel planes so as to prevent the accumulation of large drops of water at the lastb mentioned edge and a gutter member arranged above and formed ntegrally with said tapering member for collecting water running downwardly on said last-mentioned plane and thus preventing water f1 om rea,ch-

ipg the lower edge thereof. i v

A wind SCIBGIIO]; a vehicle,cellpr sng s1de members, a lower pmel mqunted bet ween pml havng an upper free edge, s ad upper panels h avingrfree upper end. lower edgee,;

the upperedge of.the 1 0Wer panelbeing nor;- mally below the lower panels to provdea clear vision gap, sad. upper panels benginclined reatwarclly with respect to sad 10Wer panel, one f"said up'per panels beng dsposed vertcally above the lower panel and one of said upper panels being disposed behind the lower panel, whereby the vertcal projection of the lower panelpassesbetween the lower edges of the upper panels, the upper panels providing a passageway of undmnshed cross-sectonal area havng a lower inlet opening normally above the upper edge of the lower panel and an outlet opening above the inlet openng.

4. A wnd screen for a vehicle comprsing side members, a lower panel mounted between said side members at an angle to the horizontal, and a pluralty of horizontally dfisplaced upper panels held by said sde members in fixed relatonship, said lovver panel having an upper free edge, sad upper panels havng free upper and lower edges, the upper edge of the lower panel being normally below the lower edges of the upper panels to provide a clear vision gap, said upper panels being inclned rearwardly wth respect to said lower panel, one of sad upper panels being disposed vertically above the lower panel and one of said upper panels beng disposed behnd the lower panel, whereby the vertical projecton of the lower panel passes between the lower edges Of the upper panels, the upper panels being arranged to provide a passageway of undmnished cross-sectional area havng a lower in- 1et opening normally above the upper edge of the lower panel and an outlet openng above the inlet opening, and the outlet opening being at least as mg.

5. A wind screen for a vehicle sde members, tween sad side horzontal, and

comprsing a lower panel mounted bemembers at an angle to the a pluralty of horizontally d1splaced upper panels held by 'sad side members in fixed parallel relationship, said lower panel having an upper free edge, said upper panels havng free upper and lower edges, the upper edge of the lower panel eing normally below the lower edges of the up per panels to provide a clear vson gap, sa1d upper panels being nclned rearwardly wth respeet to said lower panel, one of said upper panels being disposed vertically above edges of the .;upper;

large as the inlet openche Wer panel and one ofsaidupper panels being disposed behnd the lower fianel, whereby the vertical projection of the 10We1 panel passs betWeen the lower edges of the 3 upper panels, the uppet panels pro7iding a passageway of undiminished cf'oss sectonalarea having a lower inlet openhg normally above the upper edge of the low'r pahel and an outlet opening above the inlei; open- 10 ing, and the forwardly disposed 1p'per pm extending higher than the iealwardl'y dis-' posed upper panel. V In testimony wherof I aflxmy signa'tre. FREDERICK ASSHETON TAYLOR. 

